topical media & game development
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lib-game-delta3d-sdk-examples-testApp-testapp.cpp / cpp



  /* -*-c++-*-
  * testApp - testApp(.h & .cpp) - Using 'The MIT License'
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
  include <dtCore/camera.h>
  include <dtCore/globals.h>
  include <dtCore/object.h>
  include <dtCore/transform.h>
  include <dtABC/application.h>
  
  int main()
  {
  
     std::string dataPath = dtCore::GetDeltaDataPathList();
     dtCore::SetDataFilePathList(dataPath + ";" + 
        dtCore::GetDeltaRootPath() + "/examples/data" + ";" +
        dtCore::GetDeltaRootPath() + "/examples/testApp/;");
                          
   
     dtCore::RefPtr<dtABC::Application> app = new dtABC::Application( "config.xml" );
  
     //load some terrain
     dtCore::RefPtr<dtCore::Object> terrain = new dtCore::Object( "Terrain" );
     terrain->LoadFile( "models/terrain_simple.ive" );
     app->AddDrawable( terrain.get() );
  
     //load an object
     dtCore::RefPtr<dtCore::Object> brdm = new dtCore::Object( "BRDM" );
     brdm->LoadFile( "models/brdm.ive" );
     app->AddDrawable( brdm.get() );
     osg::Vec3 brdmPosition( 0.0f, 0.0f, 3.5f );
     osg::Vec3 brdmRotation( 90.0f, 0.0f, 0.0f );
     dtCore::Transform trans;
     trans.SetTranslation( brdmPosition );
     trans.SetRotation( brdmRotation );
     brdm->SetTransform( trans );
     
     //adjust the Camera position
     dtCore::Transform camPos;
     osg::Vec3 camXYZ( 0.f, -30.f, 15.f );
     osg::Vec3 lookAtXYZ ( brdmPosition );
     osg::Vec3 upVec ( 0.f, 0.f, 1.f );
     camPos.Set( camXYZ, lookAtXYZ, upVec );
     app->GetCamera()->SetTransform( camPos );
  
     app->Config();
     app->Run();
  
     return 0;
  }
\page testApp Application Tutorial \dontinclude testApp.cpp This tutorial will decompose the testApp example, found in the Delta3D/Examples folder. It is meant as a very simple introduction to the dtABC::Application class. When you run testApp.exe, this is what you should see: \image html testApp.jpg The first thing we need to do is include some header files. In this example, we'll include all the header files which are required for this example. We could have also included the main headers dt.h and dtABC.h, which correspond to namespaces and subsequently, the libraries we need. <b>When you include these header files, the library files get automatically linked in</b>. Since we're not using the main header files, we have to setup our project file to link in the additional libraries and their dependencies. \skip camera.h \until application.h Now we can set up our search paths to find the data files we'll use in the application. In this case, we append a couple of strings together, separated by a semi-colon: \skip main \until ); Now we can create a new dtABC::Application. Notice we're storing it as a dtCore::RefPtr. This will allow it to be delete automatrically when the variable goes out of scope. We're also passing in the name of a config file which will allow us to change some aspects of this application. \skipline RefPtr 

  * Then we create a couple of dtCore::Object and give them files to load.  Don't forget to add it to the Scene,
  * or else it won't get rendered. To do this, we can just use dtABC::Application::AddDrawable().
  * \skipline "Terrain"
  * \until brdm.get
  *
  * On the second dtCore::Object, lets set its position using the dtCore::Transform
  * class.  In this case, the Transform just changes the heading  by 90 degrees.
  * \until SetTransform
  *
  * Now we can set up the dtCore::Camera position by giving it a position and a place to look at.
  * \until app->GetCamera()
  * 
  * And finally, tell the dtABC::Application to configure and to run.  The dtABC::Application::Run() method
  * is blocking, meaning it won't return control back until the the Application has exited.  To quit the 
  * app, just hit the escape key.
  * \until return
  */
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

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